USER
mode with USR keyTo simplify use it's possible change the keyboard to the complex keyboard, and remove the need to trigger every command with Z
Enable the keyboard with ZK?YN
and answer Y
.
Put ZK?YN
on the CST
custom user menu for quick access!
Now the USER
keyboard is re-mapped to match the overlay and things are much easier. To use normal
functions simply press USR to temporarily switch off the complex keyboard. Press USR to switch back to complex mode. To leave complex mode completely and return USER
keyboard to normal re-run ZK?YN
and answer N
To enter a complex number in this mode :
2 + 3i
2 ENTER 3 ENTER
To add 2 + 3i
+
10 - 4i
2 ENTER 3 ENTER
10 ENTER 4 CHS ENTER
+
Result:
12 - j 1
The alternative “permanent Z-Keyboard” method is less cumbersome and more intuitive.
e.g. POLAR
mode
Enter a complex number in rectangular mode and then switch to POLAR
mode
50 ENTER 23 ENTER
ZZ6
55.04 ∠ 24.70
All further entries will remain as POLAR
eg a new complex number in POLAR format
100 ∠ - 85
100 ENTER 85CHS ENTER
display :
100 ∠ - 85
Switch back to RECT
mode
ZZ5
8.72 - 99.62
5 + j 20
Z XEQ
is ^IM/AG
- set the imaginary part10 - j 32
15 - j 12
This involves the complex inverse
function Z 1/x
Z1 = 50 + j 13
in parallel with Z2 = 23 - j 85
0.02 - j 4.87E-3
2.97E-3 + j0.01
0.02 +j0.01
and invert Z 1/X 42.72 - j 11.99
50 ENTER 13 ENTER
1/x
23 ENTER 85CHS ENTER
1/x
+
1/x
Result :
42.72 - j 11.99
Z = 50 - j 23
R→P
but needs two presses of Z to activate it)55.04 ∠ -24.70
50 - j 23
5 ∠ 53.13
directly5 ∠ 53.13
3.00 + j 4.00
complex enter
(Z ENTER) or another complex function
(e.g. Z +) (be careful with the stack lift or it gets confusing)52 + j 36
52 + j 36
is now in Stack23 - j 15
75 + j 21
Stack value | Stack |
---|---|
U | |
52 + j 36 | V |
23 - j 15 | W |
23 - j 15 | Z |
doing a Z + now will add the second number to itself and the result will be 46 - j 30
This is normal RPN stack behaviour, but is confusing when you're building complex numbers.
The natural
entry mode is much better
Page created Wed May 25 15:14:29 2022 by John Pumford-Green
Page last updated: 05/09/24 11:38 BST